Chapter 16, Problem 16.3VC

Interpretation Introduction

Interpretation:

For which of the given weak acid solution can we most likely neglect x in the denominator of the equilibrium expression in the determination of pH has to be identified

Concept Information:

Weak acid:

Weak acids ionize only to limited extent in water. At equilibrium, an aqueous solution of a weak acid has a mixture of unionized acid molecules, hhydronium ions and corresponding conjugate base.

pH definition:

The concentration of hydrogen ion is measured using $\text{pH}$ scale.  The acidity of aqueous solution is expressed by $\text{pH}$ scale.

The $\text{pH}$ of a solution is defined as the negative base-10 logarithm of the hydrogen or hydronium ion concentration.

$\text{pH}\text{=}{\text{-log[H}}_{\text{3}}{\text{O}}^{\text{+}}\text{]}$

To Identify: The diagram representing weak acid for which x can be neglected in the denominator of equilibrium expression